Chimney-top.



E. J. OOGHRAN.

CHIMNEY TOP.

APPLIOATION FILED JAN.18,1908.

Patented Feb. 9, 1909.

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EDWIN J. OOOHRAN, OF STERLING, ILLINOIS.

CHIMNEY-TOP.

Application filed January 18, 1908.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Serial N0. 411,403.

To all whom it may concem:

Be it known that I, EDWIN J. COOHRAN, a citizen of the United States ofAmerica, and a resident of Sterling, in the county of \Vhiteside andState of Illinois, have invented certain new and useful Improvements inChimney-Tops, of which the following is a specification.

This invention relates to that class of chimney tops in which astationary and substantially T shaped tubular shell constitutes the mainor outlet portion of the chimney top. And the present improvement hasfor its object to provide a simple and efiicient structural formation ofsuch T shaped shell whereby its manufacture is expedited and cheapened,and its attachment to its sup porting base or coping upon the chimneyeffected in a ready and substantial manner, all as will hereinafter morefully appear.

In the accompanying drawings illustrative of the present invention:Figure l, is a view one-half in elevation and one-half in section on anaxial plane through the chimney top. Fig. 2, is a plan view of the mainportion of the chimney top. Figs. 3, l and 5 are detail sections on therespective line M e and re -00 Fig. 1.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings 1 represents the supporting base or copingattached to the upper end of the chimney of a building and which is ofthe same general construc tion as the base shown and described in myformer application for Letters Patent Serial Number 309125, filed March31, 1906, and accordingly comprises, a fiat marginal portion 2 adaptedto rest upon the upper surface of the chimney of a building; a shallowcavity 3 inclosed by said marginal portion and adapted to contain theattaching means hereinafter described, and which secures the base to thechimney, and a central dome shaped portion having at its upper end aneck or collar 4 to which the chimney top proper is attached. Theattaching means above referred to, preferably the same as in my beforementioned application, and consist of pairs of anchor members pivoted bymeans of horizontal attaching arms 5 and clamping bolts 6 to said baseand having depending prongs 7 adapted to engage against the inner wallsof the chimney to hold said base or coping 1 in place.

8 is the main vertical shell of the chimney top, formed at its lower endwith an expanded flange or sleeve 9 adapted to fit over 1 the neck orcollar a of the base 1, and form a substantial connection between theparts as hereinafter more specifically set forth; at its upper end saidvertical shell opens into a branch shell 10, having a substan tiallyhorizontal relation to the main shell and preferably of the segmentalopen ended formshown in Fig. 1.

In the present improvement the chimney top having the shape abovedescribed is formed by two counterpart halves, the meeting edges ofwhich are on a vertical plane cutting the axis of the circular shellportions aforesaid. Such counterpart halves accordingly have asemi-circular form in cross-section, and are capable of accurate andeconomical formation, in that the use of cores and other expensivemolding provisions are entirely avoided. Each of the aforesaid halvesare provided along one of its meeting edges or surfaces with flanges orlips 11 that are adapted to overlap corresponding unflanged edges orsurfaces of the companion half, to insure a close joint between theparts as well as an accurate fitting together of the same. The halvesare exact counterparts and the arrangement of the aforesaid flanges orlips 11 is such that when two of the halves are reversed and placedtogether to form the chimney top, the flanges or lips 11 on one halfwill fit the unfianged edges of the other half, and viceversa.

12 are counterpart ears arranged centrally at the crown of the segmentalupper shell of the chimney top, to provide a convenient means forattaching the halves together at such point, by means of a screw 13 orlike fastening passing through said ears.

14: are counterpart ears arranged at the meeting surfaces or edges ofthe expanded circular flange 9 of the chimney top, and through whichears the screw bolts 15 pass to draw the chimney top halves together andfirmly clamp the same upon the neck or collar 4c, of the base 1 in afinal assemblage of the chimney top and base.

16 are gusset webs formed on the chimney top halves aforesaid, at thepoints of intersection of the main shell 8 and branch shells 10, andadapted to afford an extended surface contact at such points and preventleakage of smoke; as well as the entrance of wind gusts at such points.

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent is 1, A chimney top, comprising incombination, a base having at top a central cylindrical neck, means forattaching said base to a chimney, a T shaped chimney top having avertical shell adapted for attachment to the central neck aforesaid,said chimney top being formed of counterpart halves the meeting edges ofeach of which are formed at one side with an overlapping flange and atthe other side with an unflanged surface, and means for connecting saidhalves together and clamping the same upon the cylindrical neck of thebase.

2. A chimney top, comprising in combination, a base having at top acentral cylindrical neck, means for attachingsaid base to a chimney, a Tshaped chimney top having a vertical shell adapted for attachment to thecentral neck aforesaid, said chimney top being formed of counterparthalves the meeting edges of each of which are formed at one side with anoverlapping flange and at the other side with an unflanged surface,counterpart ears arranged centrally at the crown of the chimney tophalves, a fastening means passing through said ears, and means forsecuring the lower ends of the halves together and clamping the sameupon the cylindrical neck of the base.

'3. A chimney top, comprising in combination, a base having at top acentral cylin- 'drical neck, means for attaching said base to a chimney,a T shaped chimney top having a vertical shell provided with an expandedsleeve at its lower end adapted for engagement with the central neckaforesaid, said chimney top being formed of counterpart halves themeeting edges of each of which are formed at one side with anoverlapping flange and at the other side with an unhalves the meetingedges of each of which are formed at one side with an overlapping flangeand at the other side with an unll'anged surface, counterpart earsarranged centrally at the crown of the chimney top halves, a fasteningmeans passing through said ears, and means for securing the lower endsof the halves together and clamping the same upon the cylindrical neckof the base.

A chimney top, comprising in combination, a base having at top a centralcylindrical neck, means for attacl'nng-saidbase to a chimney, a T shapedchimney top having a vertical shell adapted for attachment to thecentral neck aforesaid and segmental outlet branches at the upper end ofsaid vertical shell, said chimney top being formed of counterpart halvesthe meeting edges of each of which are formed at one side with anoverlapping flange and at the other side with an unfianged surface,gusset webs at the intersection of the vertical shell with the segmentaloutlet branches, and means for connecting said halves together and"clamping the same upon the cylindrical neck of the base.

Signed at Sterling, Illinois.

EDWIN J. GOCHRAN.

Witnesses:

JOHN Roman, ARTHUR J. Bncmsn.

chimney top being formed of counterpart

